Degradation of tert-butyl formate and its intermediates by an ozone/UV process.
In this paper, the oxidation of tert-butyl formate (TBF) in aqueous solution by an ozone/UV process was described. The oxidation process was investigated experimentally in a semibatch reactor. The results of the study indicated that the ozone/UV process was very effective in oxidizing TBF. tert-Butyl alcohol (TBA), hydroxy-iso-butyraldehyde (HiBA), acetone, formaldehyde, and formic acid were identified as major primary intermediates during the oxidation of TBF. About 90% organic carbon balance was obtained indicating that most reaction intermediates have been identified and quantified. Some of the primary intermediates were also oxidized in the ozone/UV system. Accordingly, HiBA, acetone, formaldehyde, and formic acid were the primary intermediates of TBA oxidation. The oxidation of acetone in the ozone/UV system generated formaldehyde, pyruvaldehyde, acetic acid, formic acid as primary intermediates. It was also observed that the reaction intermediates formed during the oxidation of TBF react well in the ozone/UV system and complete mineralization could be achieved by the process.
Garoma
Temesgen
T
Department of Civil, San Diego State University, San Diego, CA 92182-1324, United States. tgaroma@mail.sdsu.edu
Gurol
Mirat D
MD
Thotakura
Lalitha
L
Osibodu
Olufisayo
O
D002244:Carbon / Q000737:chemistry; D004785:Environmental Pollutants / Q000737:chemistry* / Q000302:isolation & purification; D005561:Formates / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D017665:Hydroxyl Radical / Q000737:chemistry; D010084:Oxidation-Reduction; D010126:Ozone / Q000737:chemistry*; D010782:Photolysis; D013997:Time Factors; D014466:Ultraviolet Rays; D014867:Water / Q000737:chemistry
D004785:Environmental Pollutants; D005561:Formates; C534791:tert-butyl formate; D014867:Water; D017665:Hydroxyl Radical; D010126:Ozone; D002244:Carbon